Leatherique!

Or straight neatsfoot oil, but that's easy to overdo if you're not familiar with it. Lexol is OK, slightly better than most others that do nothing at all except make seats slippery. Your seats are coated with (I believe) polyurethane, or maybe varnish, so the only advantage to using something like leatherique, since our seats aren't aniline is that it will penetrate at the sewn seams and keep the leather more supple in this area. I've never torn a leather seat seam that I've applied it to, or had cracking in areas where the poly coating wore off. Fingers crossed. Current cars at 150k+ and up to 21 years old with mint seats, last leather Camry I had that only used the parts store cleaners on, a seat seam let loose at less than 100k and 10 years.